alone, 27 percent of americans now live alone. that is a huge jump from 1970 when only 17 percent lived alone. several reasons include americans waiting until later in life to marry. and elderly adults living longer. >> if you look if the most livable city ... you have to go outside the united states. melbourne, australia, is taking top honors according to the safety, the third year in a row they took the title based on stability, health care, culture and environment, education, and infrastructure. here is a look at some of the other cities: two is vienna, via, vancouver, canada, toronto, and five is calgary. what? all canadian cities? the united states are not in the top temperature and syria is at the bottom.